package com.itheima.reggie.filter;

import com.alibaba.fastjson.JSON;
import com.itheima.reggie.common.BaseThread;
import com.itheima.reggie.common.Result;
import com.itheima.reggie.pojo.Employee;
import com.sun.prism.impl.BaseContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


@WebFilter(filterName = "loginCheckFilter",urlPatterns = "/*")
public class LoginCheckFilter implements Filter {

    @Autowired
    private  ThreadLocal threadLocal;

    public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

        HttpServletRequest request = (HttpServletRequest) servletRequest;

        HttpServletResponse response = (HttpServletResponse) servletResponse;

        String requestURI = request.getRequestURI();

        String[] urls = new String[]{
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**",
                "/common/*",
                "/user/*"
        };

        boolean check = check(urls, requestURI);

        Long id = (Long) request.getSession().getAttribute("employee");

        if (check || id!=null){
            threadLocal.set(id);
            filterChain.doFilter(request,response);
            return;
        }


        Long user = (Long) request.getSession().getAttribute("user");

        if (check || user!=null){
            threadLocal.set(user);
            filterChain.doFilter(request,response);
            return;
        }

/*
        if (true){
            threadLocal.set(1);
            filterChain.doFilter(request,response);
            return;
        }
*/

        response.getWriter().write(JSON.toJSONString(Result.error("NOTLOGIN")));

        return;

    }

    private boolean check(String[] urls, String requestURI) {

        for (String url : urls) {
            boolean match = PATH_MATCHER.match(url, requestURI);
            if (match)
                return true;
        }

        return false;
    }
}
